Nut-lock.



B; I. PURVIANGE;

NUT LOOK. APPLICATION FILED APR.13, 1911'.

Patented Feb. 6, 1912.

Cir

nnirnn srn'rns rA'rEN'r OFFICE.

BENJAMIN F. PURVIANCE, O-F BROOKPARK, BYRON J. ICELSEY, OF BR \MINN ooxr ESOTA, ASSIGNOR F ONE-HALF T0 ARK, MINNESOTA.

NUT-LOGK.

Specification of L To all whom it may concern:

et ers P ten Ifatented Feb. 6, 1912.

13, 1911. Serial No. 620,921.

leaving a space 6. The marginal portion of Be it known that I, BENJAMIN 'F. PURVI- the washer l at the sides of the space 6 and ANGIE, citizen of the United'States, residing beyond-the pointed end of the prong is at Br oolqaarlr, in the county of Pine and distorted, at 7, out of the plane of the State of Minnesota, have invented certain central portion of the washer. The washer 0 new and useful Improvements in N ut-l1ocks, may be provided with any number of the of which the following is a specification. cruciform incisionsep This invention relates to a nut lock, and. When the washer is applied to a nut and. has for its object to provide a washer of bolt mounted upon a wooden base, one or peculiar configuration which may be applied more of the prongs 5 are bent down at their to a bolt and nut whether used upon a tounpointed end portions and the opening 2 is dation of wood or metal, and which is adaptplaced over the bolt. The nut is then ed to securely hold. the nut in an adjusted screwed upon the end of the bolt, and when position upon the bolt. lWith this object in it engages the outer face of the washer the view the washer is provided with a bolt points of the bent down prongs 5 are forced 7-0 opening and with an arouate'periphery, the into the grain of the wood. When the nut. said washer being incised from its periphery has been sufficiently tightened upon the bolt inward, the incisions crossing each other one corner of the nut is drawn over one set within the periphery of the washer, whereby of incisions 4, then by striking the distorted an angularprong is formed within the marmarginal portion 7 ol the washer 1. with ginal portion of the washer, and a section of a hammer or other implement, the said porthe marginal por'gion at the point of the tion bent down against the corner portion prong is removed. leaving an open space. of the nut, and consequently the nut is pre The marginal portion of the washer at the vented from unscrewing from the bolt. sides of the said space and beyond the end The object of providing the distorted ego of the prong is distorted out of the plane of. marginal portions 7 at both. sides of the the middle portionoi the washer, in order space 6 is that one or the other of the said that they may be readily bent up against portions may be. bent down irres 'iective oi the sides of a nut to hold the same. the disposition of the thread upon the bolt.

For a'full understanding of the invention That is to say, it there is a right hand thread reference is to be had to the following de the marginal portion 7 at one side of the scription and accompanying drawing, in space (3 will be bent down, while if the which: thread of the bolt is left hand the marginal Figure l is a'p-lan View out one form of portion. 7 at the other side of the said space the ash r; Fig. 2 is a sectional VlGW ot' the (5 bent down. washer applied to a nut and bolt and wooden In F 5 of the drawing is shown several base; Fig. 3 is a side elevation of the same; washers 1 connected together by webs 8. Fig. i is a perspective view of the washer; This form of nut lock is designed to be used and Fig. a plan view of a niodifiedtorni upon the fish-plates of rail joints, and inasof the washer. I much as the said p ates are formed from 9.3 (Poi-responding and like parts are referred metal, the prongs 5 are not bent donn, but to in the following description and indicated remain the same plane as the middle porin all the views of the accompanying drawtions of the nut washers. The (quaint; 2 on ings by the same reference characters. each washer '1. receives a bolt, consequently As illustrated in the aecompanyingdrawthe said washers cannot turn with relation ing, the washer l is formed from a blank of to each other or with relation to the bolts. sheet metal andis provided with a central When the nuts are tightened upon the bolts ciroularbolt opening 2. The periphery of their corner portions are brought over the the washer 1 is arcu ate, as at 3, and extend prongs .5 and the marginal ')ortions 7 of ing in from the said arcuate portions are the washers are bent down against the sides 10 cruciform incisions 4:; These incisions cross of the nuts, in the manner as above indieach other with the arcuate peripheral por cated. tion 3 forming a pointed prong 5, and the Having thus described the invention, what material at the peripheral portion beyond. is claimed as new is: the pointed end of the prong 5 is removed A. nut lock, comprising awaslier providedllc with a bolt opening and with an arcuate pe-= riphery, the washer being incised from its perlphery inward, the incisions crossing each other within the periphery of the washer, whereby an angular prong is formed within'the marginal portion of the Washer,

-10 portion at the sides of said space and beyond the end of the prong distorted out of the plane of its middle portion, said marginal portion having a blunt end.

In testimony whereof, I afiix my signature in presence of two witnesses.

BENJAMIN F. IURVIANCE.

Witnesses O. J. WVOODBEEK, A. L. ScorIELn. 

